{"site":{"name":"Koji","description":"AI-native customer research platform that helps teams conduct, analyze, and synthesize customer interviews at scale.","url":"https://www.koji.so","contentTypes":["blog","documentation"],"lastUpdated":"2026-06-26T12:20:28.782Z"},"content":[{"type":"blog","id":"42131c9e-ee2a-45e5-a316-8fac29ad44cf","slug":"koji-vs-useberry-2026","title":"Koji vs Useberry (2026): Unmoderated Prototype Testing vs AI-Moderated Interviews","url":"https://www.koji.so/blog/koji-vs-useberry-2026","summary":"Koji and Useberry capture different layers of insight. Useberry is an unmoderated UX testing platform — import a Figma, XD, or Sketch prototype and collect quantitative click-path data (task success, completion time, drop-off, first-click, card sort, tree test) plus heatmaps. Koji is an AI-native research platform that runs AI-moderated voice and text interviews with 6 structured question types, probes up to 3 follow-ups per question, themes transcripts automatically, and ships a one-click report explaining why. Useberry needs a prototype and measures whether a flow works; Koji works with no design and explains why it works or fails. Useberry pricing: free (10 responses/mo), Growth ~83 EUR/mo, Business ~659 EUR/mo. Koji: transparent per-credit (29-79 EUR/month). Most teams pair them: Koji frames the problem, Useberry tests the prototype, Koji explains the drop-off.","content":"## TL;DR\n\n**Koji** and **Useberry** both help product teams learn from users, but they capture different layers of insight.\n\n- **Useberry** is an unmoderated UX testing platform. Import a Figma, Adobe XD, or Sketch prototype, set up tasks, and collect quantitative click-path data — task success rates, completion times, drop-off points, first-click tests, card sorts, and tree tests — plus heatmaps and recordings.\n- **Koji** is an AI-native customer research platform. It runs AI-moderated voice and text interviews, probes up to three follow-ups per question, themes every transcript automatically, and ships a stakeholder-ready report that explains *why* users did what they did.\n\nUseberry tells you *whether* a prototype works — did users complete the task, where did they hesitate, how many clicks did it take. Koji tells you *why* it works or fails — what they expected, what confused them, what they would pay for. Useberry measures the click path; Koji captures the human behind it. The best discovery programs use both.\n\nThis post breaks down what each tool is genuinely good at, where each falls short, real 2026 pricing, and the eight scenarios where teams pick one over the other.\n\n## Quick comparison: Koji vs Useberry\n\n| Capability | Koji | Useberry |\n|---|---|---|\n| Primary methodology | AI-moderated voice + text interviews | Unmoderated prototype + usability testing |\n| Captures the *why* | Yes — AI probes up to 3 follow-ups per question | Limited — optional open-text, no live probing |\n| Figma / prototype click-path testing | No — interviews, not prototype tasks | Yes — core strength (Figma, XD, Sketch) |\n| Structured questions | 6 types: open_ended, scale, single_choice, multiple_choice, ranking, yes_no | First-click, card sort, tree test, task metrics |\n| Automatic thematic analysis | Yes, across every transcript | Quantitative metrics + heatmaps |\n| Adaptive follow-up | Yes — AI digs into every answer | No — tasks are fixed and unmoderated |\n| Works without a prototype | Yes — concept, pricing, JTBD with no design | No — needs an importable prototype |\n| Voice interviews | Yes — natural spoken conversation | No — task-based, mostly silent |\n| Pricing | Transparent per-credit (29-79 EUR/mo) | Free (10 responses/mo); Growth 83 EUR/mo; Business 659 EUR/mo |\n| Best for | The *why*, discovery, validation, pricing | Measuring whether a prototype flow works |\n\n## What Useberry is genuinely good at\n\nUseberry has become a leader in unmoderated, prototype-first UX testing. Its strengths in 2026:\n\n- **Deep Figma integration.** Connect once, pick a prototype, and Useberry keeps it in sync so teams iterate without re-uploading. It is recognized for some of the deepest click-path analysis on Figma prototypes available.\n- **Quantitative usability metrics.** It automatically captures task success rates, completion times, drop-off points, and misclicks — the numbers you need to prove a flow works.\n- **Built-in research methods.** First-click tests, card sorting, tree testing, and single-task usability tests are all native, covering the core unmoderated toolkit.\n- **Visual analytics.** Heatmaps, click maps, path analysis, and session recordings make it easy to see *where* users hesitated or went off-path.\n- **Fast and scalable.** Unmoderated tests run around the clock with no scheduling, so you can collect hundreds of responses quickly.\n\nIf your question is *does this prototype flow work and where do users get stuck*, Useberry answers it well.\n\n## Where Useberry falls short\n\nUseberry is unmoderated and task-based by design, and that design has clear limits:\n\n- **It struggles to explain the why.** You can see a 30% drop-off on step three of a flow, but an unmoderated task cannot adaptively ask \"what were you expecting to happen there?\" Optional open-text boxes are not a conversation — there is no probing, no follow-up, no chasing the real reason.\n- **It needs a prototype.** Useberry requires an importable design. You cannot use it to validate a raw concept, a pricing model, or a positioning statement before anything is designed — exactly when research reshapes the most decisions.\n- **No real voice interviews.** Testing is task-driven and largely silent. You lose the tone, hesitation, and spontaneous detail that spoken answers carry. See why this matters in [voice vs text interviews](/docs/voice-vs-text-interviews).\n- **Response-capped pricing.** The free plan stops at 10 responses per month, and meaningful volume sits on the Growth and Business tiers — costs scale with response count, not with insight.\n- **Behavioral, not motivational.** Like all unmoderated UX tools, Useberry is strong on *what users did* in a flow and thin on *why they wanted it in the first place*.\n\n## What Koji does that Useberry cannot\n\n[Koji](/) covers the motivational layer that an unmoderated task test cannot reach.\n\n- **AI-moderated interviews at scale.** Koji runs the same structured interview with every participant over [voice or text](/docs/ai-voice-interviews), probing up to three follow-ups per question to chase the *why* behind every answer — the adaptive depth a fixed task list cannot deliver.\n- **Six structured question types.** Combine [open-ended](/docs/ai-moderated-interviews) probing with `scale`, `single_choice`, `multiple_choice`, `ranking`, and `yes_no` questions for quotable depth *and* chartable numbers in one study.\n- **Automatic thematic analysis.** Every transcript is themed automatically — no manual tagging or spreadsheet coding. See the methodology in our [thematic analysis guide](/docs/thematic-analysis-guide).\n- **Works with no prototype at all.** Because Koji is a shared link, you can validate the concept, the price, and the value proposition long before a designer opens Figma. See [concept testing methodology](/docs/concept-testing-methodology) and our guide to [prototype testing and concept validation](/docs/prototype-testing-concept-validation).\n- **One-click reports.** Question to insight in hours, with themes, quotes, and quantitative breakdowns generated automatically.\n\nFor where usability testing fits alongside interviews, see the [usability testing guide](/docs/usability-testing-guide) and [usability testing questions](/docs/usability-testing-questions).\n\n## Real 2026 pricing: Koji vs Useberry\n\n**Useberry** prices by response volume:\n\n- **Free** — 10 responses/month, 1 project\n- **Growth** — about 83 EUR/month (billed yearly), 300 responses/month, unlimited projects\n- **Business** — about 659 EUR/month (billed yearly), 2,000 responses/month, 5 seats\n- **Enterprise** — custom\n\n**Koji** uses transparent, per-credit pricing:\n\n- **Insights — 29 EUR/month** (29 credits included)\n- **Interviews — 79 EUR/month** (79 credits included)\n- **Free tier** — 10 credits on signup, no card required\n- Credit costs: text = 1, voice = 3, report refresh = 5. Only conversations that score 3+ on the quality gate consume credits, so junk responses never burn budget.\n\nThe real decision is not price, it is layer. Useberry charges you per response to measure a prototype flow. Koji charges you per credit to understand the person using it.\n\n## 8 scenarios: which tool wins\n\n1. **\"Can users complete checkout in my Figma prototype?\"** → **Useberry.** Task metrics on a prototype are its core.\n2. **\"Why did users hesitate on the plan-selection screen?\"** → **Koji.** Interview them and hear the reason.\n3. **\"We have no design yet — is this idea worth building?\"** → **Koji.** Useberry needs a prototype; Koji does not.\n4. **\"Run a first-click test and a tree test on this IA.\"** → **Useberry.** Purpose-built unmoderated methods.\n5. **\"Would users pay 19 EUR or 39 EUR for this?\"** → **Koji.** Pricing is a conversation, not a click-path metric.\n6. **\"Measure task success across three design variants.\"** → **Useberry.** Quantitative comparison wins.\n7. **\"What job are users hiring this product to do?\"** → **Koji.** JTBD is interview territory.\n8. **\"I need quotes and themes for the stakeholder deck.\"** → **Koji.** Automatic thematic analysis and a one-click report.\n\n## When to use Koji and Useberry together\n\nThe strongest discovery loop runs both:\n\n1. **Koji frames the problem** — before design starts, run AI-moderated interviews to learn what users actually need, what they would pay, and which jobs matter.\n2. **Useberry tests the prototype** — once a Figma flow exists, measure task success, completion time, and drop-off to confirm the design works.\n3. **Koji explains the drop-off** — when Useberry shows users stalling on a specific step, interview that cohort to learn *why* and feed the answer into the next iteration.\n\nUseberry measures the flow. Koji explains the human. Together they turn \"32% dropped off at step three\" into \"32% dropped off because they expected a guest-checkout option, and here are 9 quotes proving it.\"\n\n## The bottom line\n\nUseberry is a strong unmoderated prototype-testing tool — the right choice for measuring whether a Figma flow works and where users get stuck. What it cannot do is hold a conversation. Koji is the AI-native research platform built for exactly that: voice and text interviews, adaptive probing, six structured question types, automatic themes, and reports in hours — with or without a prototype.\n\nIf your next design decision depends on understanding user motivation, not just task metrics, [start free with Koji](/) and run your first AI-moderated study today. Ten credits, no card, your first insights this afternoon.","category":"Comparisons","lastModified":"2026-06-26T03:18:39.846261+00:00","metaTitle":"Koji vs Useberry (2026): Prototype Testing vs AI-Moderated Interviews | Koji","metaDescription":"Useberry tests Figma prototypes with unmoderated tasks and heatmaps; Koji runs AI-moderated interviews that probe the why. Compare click-path metrics vs conversational depth — features, 2026 pricing, 8 scenarios.","keywords":["koji vs useberry","useberry alternative","useberry pricing","prototype testing tool","figma usability testing","unmoderated usability testing","AI customer research","AI moderated interviews"],"aiSummary":"Koji and Useberry capture different layers of insight. Useberry is an unmoderated UX testing platform — import a Figma, XD, or Sketch prototype and collect quantitative click-path data (task success, completion time, drop-off, first-click, card sort, tree test) plus heatmaps. Koji is an AI-native research platform that runs AI-moderated voice and text interviews with 6 structured question types, probes up to 3 follow-ups per question, themes transcripts automatically, and ships a one-click report explaining why. Useberry needs a prototype and measures whether a flow works; Koji works with no design and explains why it works or fails. Useberry pricing: free (10 responses/mo), Growth ~83 EUR/mo, Business ~659 EUR/mo. Koji: transparent per-credit (29-79 EUR/month). Most teams pair them: Koji frames the problem, Useberry tests the prototype, Koji explains the drop-off.","aiKeywords":["koji vs useberry","useberry alternative","prototype testing tool","figma usability testing","unmoderated usability testing","AI moderated interviews","AI customer research","useberry pricing"],"aiContentType":"comparison","faqItems":[{"answer":"Useberry is an unmoderated UX testing platform for Figma and other prototypes — it measures task success, completion time, drop-off, first-click, card sorting, and tree testing with heatmaps. Koji is an AI-native customer research platform that runs AI-moderated voice and text interviews and tells you why users behave the way they do. Useberry measures the click path; Koji captures the human behind it.","question":"What is the difference between Koji and Useberry?"},{"answer":"Koji is the right alternative when your goal is understanding motivation rather than measuring a prototype flow. If you need quantitative task metrics on a Figma prototype, Useberry remains the specialist. If you need to validate a concept before any design exists, test pricing, run JTBD interviews, or understand why users dropped off, Koji does what an unmoderated task test cannot.","question":"Is Koji a Useberry alternative?"},{"answer":"Useberry prices by response volume: a free plan with 10 responses/month, a Growth plan at about 83 EUR/month (300 responses/month, billed yearly), a Business plan at about 659 EUR/month (2,000 responses/month), and custom Enterprise pricing. Koji uses transparent per-credit pricing — 29 EUR/month (Insights) or 79 EUR/month (Interviews), with 10 free credits on signup and no card required.","question":"How much does Useberry cost compared to Koji?"},{"answer":"Not for prototype task testing. If your job is measuring whether users can complete a flow in a Figma prototype and where they get stuck, Useberry (or another unmoderated usability tool) is still required. Koji replaces the research half — it explains why users behave the way they do through AI-moderated interviews, and it works before any prototype exists.","question":"Can Koji replace Useberry entirely?"},{"answer":"No. Useberry is unmoderated and task-based — it collects quantitative metrics and optional open-text, but it does not run an adaptive, moderated conversation or probe follow-up answers. Koji runs an AI-moderated interview with up to three follow-up probes per question, supports six structured question types, and themes every transcript automatically.","question":"Does Useberry do customer interviews like Koji?"},{"answer":"Use Koji first to frame the problem — interview users to learn what they need and would pay for before design starts. Use Useberry to test the prototype once a Figma flow exists, measuring task success and drop-off. Then use Koji again to interview the cohort that stalled on a specific step, so you learn why and can fix the right thing.","question":"When should I use Useberry and Koji together?"}],"relatedTopics":["Koji vs Useberry","Useberry Alternatives","Prototype Testing Tools","Figma Usability Testing","Unmoderated Usability Testing","AI Customer Research","AI Moderated Interviews"]}],"pagination":{"total":1,"returned":1,"offset":0}}